Open UIDatePicker when UITextField is tapped from Custom Component - swift

Question

I have a custom UIView component that has a UITextField, UIImageView and another UIView.
I need to change the behavior of the UITextField to display a UIDatePicker when it's tapped. This is the code I'm trying to execute but for some reason the datePicker doesn't open when it's tapped:
class TextFieldWithFeedback : UIView {
#IBOutlet weak var textField: UITextField!
#IBOutlet weak var imageView: UIImageView!
#IBOutlet weak var underlineView: UIView!
override func draw(_ rect: CGRect) {
let datePicker = UIDatePicker()
datePicker.datePickerMode = .date
self.textField.inputView = datePicker
}
}
When I used the same code on my ViewController (code below) it worked:
override func viewDidLoad() {
super.viewDidLoad()
let datePicker = UIDatePicker()
datePicker.datePickerMode = .date
customView.textField.inputView = datePicker
}
Now, this solution works but it's not ideal because I have 8 of those custom views and it would be better to set it once instead of 8 times.
Which method of the View class should I use to set the datePicker up? Since draw doesn't work.
Also, how can I attach a function to modify my UITextField value when the user picks a date?

Answer 1

Managed to solve it like this:
//To control whether or not to use the DatePicker, easily customized on the Storyboard
#IBInspectable var useDatePicker: Bool = false
#IBAction func textFieldEditing(_ sender: UITextField) {
self.textFieldStartedEditing(sender: sender)
}
func textFieldStartedEditing(sender: UITextField) {
if useDatePicker {
let datePickerView:UIDatePicker = UIDatePicker()
datePickerView.datePickerMode = .date
sender.inputView = datePickerView
datePickerView.addTarget(self, action: #selector(self.datePickerValueChanged), for: UIControlEvents.valueChanged)
}
}
func datePickerValueChanged(sender: UIDatePicker) {
let dateFormatter = DateFormatter()
dateFormatter.dateFormat = "dd/MM/YYYY"
self.textField.text = dateFormatter.string(from: sender.date)
}
All of the code above inside my customView class.
If anyone else is having trouble with this and needs help feel free to comment, I promise I'll be more helpful than the people who commented on the question :)

Answer 2

what you need to do is addTarget to your Textfield and then in a method Show the UIPickerView
self.textField.addTarget(self, action: #selector(ViewController.openDatesPicker), for: .touchDown)
You should also set tag for your textfield so you can identify it later in the code. Also you should implement this method which stops the keyboard from showing up
func textFieldShouldBeginEditing(_ textField: UITextField) -> Bool {
if textField.tag == 2 {
return true
} else {
return false
}
}